1.not to mention 更不用说； 不消说

It was both deliberate and malicious, not to mention clever.
这件事是处心积虑、早有预谋的，更不用说其手段的高明%4kxsLG2nJ.iu。

The audience, not to mention the bewildered cast, were not amused.
观众们并没有觉得好笑，更不用说那些一头雾水的演员了C|EQmZ32cdhvN。

2.convert into 转化成；折合

At what rate does the dollar convert into pounds?
美元以什么汇率兑换成英镑?

We would like to convert the loft into another bedroom.
我们想把阁楼改造成又一间卧室;2owb!|Q&i。